/*
 * Copyright (c) 2011 Salzburg Research.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package at.newmedialab.skwrl.model;

import at.newmedialab.skwrl.api.SKWRLBackend;

/**
 * Add file description here!
 * <p/>
 * User: sschaffe
 */
public class VariableField<Node> extends Field<Node> {

    String name;

    public VariableField() {
    }

    public VariableField(String name) {
        this.name = name;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String toSKWRLString(SKWRLBackend<?,Node> backend) {
        return getName();
    }

    @Override
    public boolean isResourceField() {
        return false;
    }

    @Override
    public boolean isLiteralField() {
        return false;
    }

    @Override
    public boolean isVariableField() {
        return true;
    }

    @Override
    public boolean equals(Object o) {
        if (this == o) return true;
        if (o == null || getClass() != o.getClass()) return false;

        VariableField that = (VariableField) o;

        if (!name.equals(that.name)) return false;

        return true;
    }

    @Override
    public int hashCode() {
        return name.hashCode();
    }
}
